. the populations and politics are more populous. much more unpredictable environment with the event occurring here as we saw it in 2008. >> okay. p.j., tell me about this iron dome defense system. what that is about and the upgraded hamas weaponry. where does this weaponry come from? mouth how does all of the technology change the equip there? >> hamas upgraded missile systems, undoubtedly support for a variety of countries. particularly iran. because of the political changes here, egypt has relaxed its enforcement of the border between gaza and egypt making smuggling of these systems in to gaza more easy. then of course i will you have a little bit of the -- the building of an ingij nous missile capability in gaza since sit israel retreated in 2007. the iron dome is a major project of cooperation between israel and the united states. it undercuts one of the major arguments in the campaign that there was a lack of attention to israel's defense needs when in fact there is a great manifestation of significant security cooperation and obviously what we are seeing is it with was not a perfect system.